I mean, fair point, even though I'd argue that The Division DLC didn't feel like it was stripped out and then added. However, the problem with this argument is that you can't really say this about Breath of the Wild. Locking a hard mode behind DLC seems shady at best, and given how long this game's taken to make, who's to say that some of the DLC stuff wasn't taken out to be sold separately? You can't just make that claim without any sort of evidence.
Edit: Also, something that I find rather strange about Season Passes is that there is never really any incentive to buy them ahead of time, since they never go up in price once the final DLC releases. In fact, many times the Season Passes drop in price by then, so you're never really penalized for waiting. I think given the uncertain nature of DLC, even if we have a vague idea of what it's going to be, it's probably just better to wait until it comes out to see whether it's worth the money.